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Finding the Fourth Proportional to 7,616.96, 11,427.14 and 2,686.64

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Solution

The fourth proportional to 7,616.96, 11,427.14 and 2,686.64 is: 4,030.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,616.96 : 11,427.14 = 2,686.64 : x
  2. Step 2: Convert to fraction form
    7,616.96/11,427.14 = 2,686.64/x
  3. Step 3: Cross multiply
    7,616.96x = 11,427.14 × 2,686.64
  4. Step 4: Simplify right side
    7,616.96x = 30,700,575.27
  5. Step 5: Solve for x
    x = 30,700,575.27/7,616.96
  6. Step 6: Final answer
    x = 4,030.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.